Tool, how to use vim

Finally, I decided to learn the old fashion editor — VIM. I would look more like a hacker, I guess.

Reference:

• https://www.tutorialspoint.com/vim/
• https://www.geeksforgeeks.org/grep-command-in-unixlinux/
• 10分钟vim快速入门: https://my.oschina.net/u/1859679/blog/743970
• Basic Vim commands - For getting started: https://coderwall.com/p/adv71w/basic-vim-commands-for-getting-started
• A Beginner’s Guide to Using ed Editor in Linux: https://www.howtoforge.com/linux-ed-command/

Configure vim:

write “set nu” into _vimrc file (no extension) at home directory, so vim will show line numbers.

vimtutor in command line will pop up the tutor document.

There are 4 modes:

1. Normal/command mode. When you open vim, this is the default mode. You can move the cursor using arrow key and page up/down. You can copy and paste. carry a bunch of tricks and short cuts.
2. insert mode. i to enter this mode and esc to exit this mode to command mode.
3. Command line mode. : to enter this mode and esc to exit this mode. q and enter will exit vim.
4. visual mode. v to enter this mode. You can select in this mode.

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